Are there any issues preventing building TIGRE for python 3.12 in Linux?

[ovalerio]

Dear TIGRE Developers,

I noticed that if I attempt to install TIGRE from the repository in a Python 3.12 environment I get an error message:

(cil-24)  $ git clone https://github.com/CERN/TIGRE.git
Cloning into 'TIGRE'...
remote: Enumerating objects: 12626, done.
remote: Counting objects: 100% (605/605), done.
remote: Compressing objects: 100% (261/261), done.
remote: Total 12626 (delta 445), reused 349 (delta 344), pack-reused 12021 (from 4)
Receiving objects: 100% (12626/12626), 157.57 MiB | 21.96 MiB/s, done.
Resolving deltas: 100% (9166/9166), done.
(cil-24) $ cd TIGRE/
(cil-24) $ ls 
changelog.md  CODE_OF_CONDUCT.md  Common  contributing.md  Frontispiece  ISSUE_TEMPLATE.md  LICENSE.txt  MATLAB  pyproject.toml  Python  README.md  setup.py  uv.lock
(cil-24) $ conda list 'setuptools|wheel|pip'
# packages in environment cil-24:
#
# Name                    Version                   Build  Channel
pip                       25.1.1             pyh8b19718_0    conda-forge
setuptools                80.9.0             pyhff2d567_0    conda-forge
setuptools-scm            8.3.1              pyhd8ed1ab_0    conda-forge
setuptools_scm            8.3.1                hd8ed1ab_0    conda-forge
wheel                     0.45.1             pyhd8ed1ab_1    conda-forge
(cil-24) $ python -m pip wheel .
Processing TIGRE
  Installing build dependencies ... done
  Getting requirements to build wheel ... done
  Preparing metadata (pyproject.toml) ... done
INFO: pip is looking at multiple versions of pytigre to determine which version is compatible with other requirements. This could take a while.
ERROR: Package 'pytigre' requires a different Python: 3.12.11 not in '<3.12,>=3.7'

I also noticed there is currently a conda package that has been built with Python 3.12 in the ccpi conda channel:

(cil-24) $ conda search -c conda-forge -c ccpi tigre
Loading channels: done
# Name                       Version           Build  Channel             
tigre                            2.1     np115py36_0  ccpi                
tigre                            2.1     np118py37_0  ccpi                
tigre                            2.1     np118py38_0  ccpi                
tigre                            2.2    np115py36_38  ccpi                
tigre                            2.2    np118py37_38  ccpi                
tigre                            2.2    np120py39_38  ccpi                
tigre                            2.2   np122py310_38  ccpi                
tigre                            2.4 np121py38h0a26027_0  ccpi                
tigre                            2.4 np122py39h0a26027_0  ccpi                
tigre                            2.4 np123py310h0a26027_0  ccpi                
tigre                            2.4 np124py310h0a26027_0  ccpi                
tigre                            2.6    np123py310_0  ccpi                
tigre                            2.6    np123py311_0  ccpi                
tigre                            2.6    np124py310_0  ccpi                
tigre                            2.6    np124py311_0  ccpi                
tigre                            2.6    np125py310_0  ccpi                
tigre                            2.6    np125py311_0  ccpi                
tigre                            2.6    np126py310_0  ccpi                
tigre                            2.6    np126py311_0  ccpi                
tigre                            2.6    np126py312_0  ccpi                

Therefore, I want to ask if there is any issue about building/installing/using TIGRE with Python 3.12?

[AnderBiguri]

@ovalerio we do not maitain the conda tigre package, that is done by ccpi/CIL people.
The installation instructions for TIGRE just say that you need to pip install ., have you tried that?

[ovalerio]

Hi @AnderBiguri

Thanks for your answer.

Yes, I read that part. I also saw the note in the instructions mentioning pytigre in PyPI is behind from the main repo version as of November 2020.

The reason I build a wheel as oppose to a pip install . is because I need to install the package in a different environment.

For the moment, I just changed the pyproject.toml to include Python 3.12. If I find any issues down the line I will come back and let you guys know.

 diff --git a/pyproject.toml b/pyproject.toml
index 41dd2ed..003e1eb 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -26,7 +26,7 @@ authors=[
        {name = "Sam Loescher"},
 ]
 license={text="BSD 3-Clause"}
-requires-python = ">=3.7,<3.12"
+requires-python = ">=3.7,<3.13"
 
 [dependency-groups]
 dev = [

So far the compilation succeeded and I got a wheel file. My build environment looks like this:

 TIGRE $ $CC --version | head -n1
x86_64-conda-linux-gnu-cc (conda-forge gcc 13.3.0-2) 13.3.0
TIGRE $ $CXX --version | head -n1
x86_64-conda-linux-gnu-c++ (conda-forge gcc 13.3.0-2) 13.3.0
TIGRE $ ldd --version | head -n1
ldd (GNU libc) 2.17
TIGRE $ nvcc --version
nvcc: NVIDIA (R) Cuda compiler driver
Copyright (c) 2005-2025 NVIDIA Corporation
Built on Tue_May_27_02:21:03_PDT_2025
Cuda compilation tools, release 12.9, V12.9.86
Build cuda_12.9.r12.9/compiler.36037853_0
TIGRE $ cmake --version | head -n1
cmake version 4.0.3
TIGRE $ ls dist/pytigre*.whl
dist/pytigre-3.0.0-cp312-cp312-linux_x86_64.whl

Many greetings to the TIGRE Developer Team @ CERN.

[AnderBiguri]

Unforutnately there was an issue with the account for pytigre and I am struggling recovering it, so that is gone. I am tring to make a new one, if recovery doesn't work.